CN106519903A - Anti-corrosion and anti-abrasion method for organic coating of hydraulic turbine blade - Google Patents
Anti-corrosion and anti-abrasion method for organic coating of hydraulic turbine blade Download PDFInfo
- Publication number
- CN106519903A CN106519903A CN201611011344.8A CN201611011344A CN106519903A CN 106519903 A CN106519903 A CN 106519903A CN 201611011344 A CN201611011344 A CN 201611011344A CN 106519903 A CN106519903 A CN 106519903A
- Authority
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- China
- Prior art keywords
- epoxy resin
- liquid rubber
- blade
- modified epoxy
- corrosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/10—Metal compounds
- C08K3/14—Carbides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
Abstract
The invention discloses an anti-corrosion and anti-abrasion method for an organic coating of a hydraulic turbine blade. The anti-corrosion and anti-abrasion method for the organic coating of the hydraulic turbine blade comprises the steps of 1, conducting sand-blasting roughening on the surface of the blade; 2, washing the surface of the blade with acetone and ethyl alcohol and drying the surface of the blade; 3, preparing a slurry according to a ratio in which hard WC ceramic particles account for 20-45 wt% and the balance is terminal hydroxyl group liquid rubber modified epoxy resin, and mixing the slurry evenly; 4, evenly coating the slurry on the surface of the blade, and drying the blade at 90-130 DEG C so as to obtain the WC doped terminal hydroxyl group liquid rubber modified epoxy resin wear resistant and anti-corrosion coating which is molten covered on the surface of the blade. After a trial for a month in a silty river, no obvious traces of abrasion and corrosion are found.
Description
Technical field
The present invention relates to field of material technology, more particularly to a kind of turbine blade anticorrosion abrasionproof etching method.
Background technology
Abrasion wear phenomena all generally existing in many industries such as water conservancy, water power, machinery, weaving and metallurgy, and it is non-
Chang Yanchong, the economic loss for thereby resulting in can quite show.China is very huge in the spending of this aspect, especially water conservancy, water power
Department more projects.This is because China's silt content of river is big, complete excessively annual river of the sedimentary loading more than 10,000,000 tons of transporting is up to 115
Bar, according to first place in the world.Calendar year 2001 relevant statistics show Ml, and national power station total installation of generating capacity is 80.05GW, gross generation
For 2184.5 hundred million kW/h, wherein 105,600,000,000 kW h are located at the big areas of silt content of river such as northwest, southwest and North China, these are regional
Component of Hydraulic Turbines not only washed away by high-velocity flow, denuded and mechanical force is acted on, but also by being mingled with current
The abrasion of the media such as silt, ablation destruction, therefore the consume of material is very serious.In addition, in the power station of Central-South, East China,
Although because silt content of river is few, Component of Hydraulic Turbines receives that sand erosion loss is little, the cavitation of current is at deep water to water
The destruction of engine blade wheel material is then quite serious.Data shows that a large-scale power station is used for changing, repairing every year according to the relevent statistics
The expense of water conservancy machinery up to more than million yuan, therefore, solve hydraulic abrasion, erosion problem, it is very necessary.
A kind of most economical, most efficient method is exactly that the high anti-corrosion painting of high abrasion is coated on the blade and arbor of the hydraulic turbine
Layer, and wear resistant corrosion resistant metal coating is as its coating processes is simple, economic and effect is obvious, it is deep to be favored by people.
The content of the invention
It is an object of the invention to propose a kind of turbine blade anticorrosion abrasionproof etching method, resist can turbine blade
Abrasion is simultaneously anticorrosive.
, there is coating hardness in traditional coating material, including metal coating layer material and toughness is difficult to the contradiction taken into account, improve
The hardness of coating often to sacrifice its toughness as cost, causes coating to decline with skin and associativity with matrix.When by big
When particle impacting, abrasion, coating is easy to crack, hard phase is easy to fall off.
It is that, up to this purpose, the present invention is employed the following technical solutions：
A kind of turbine blade anticorrosion abrasionproof etching method, which includes：
(1) sandblasting roughening is carried out in blade surface；
(2) it is with acetone and ethanol purge roughening blade surface and dry；
(3) account for 20-45wt%, terminal hydroxy liquid rubber modified epoxy resin surplus according to hard WC ceramic particles to match somebody with somebody
Than making slurry mix homogeneously；
(4) by the slurry uniform application in blade surface, be dried at 90-130 DEG C, cladding obtained in the WC of blade surface
The terminal hydroxy liquid rubber modified epoxy resin abrasion-proof corrosion-proof erosion resisting coating of doping.
The present invention improves both compatibilitys, and shape using the liquid rubber modified epoxy resin containing terminal functionality
Into inierpeneirating network structure or half interpenetrating network structure, as terminal functionality liquid rubber contains butadiene long-chain, itself tool
There is a preferable pliability, therefore the modified epoxy that adopts of the present invention has toughness, therefore its nonmetallic painting for preparing
Layer good toughness, hardness are high, overcome the defect that conventional coatings hardness can not be taken into account with toughness.
The preparation method of terminal hydroxy liquid rubber modified epoxy resin of the present invention is the state of the art, this
Art personnel can be selected in the range of prior art.Typical but non-limiting example is as follows：
First by terminal hydroxyl polybutadiene liquid rubber or end hydroxy butadiene/acrylonitrile liquid rubber and polyisocyanates
Polyisocyanates terminated polybutadiene liquid rubber prepolymer is produced in reaction or polyisocyanates polybutadiene/acrylonitrile liquid rubber is pre-
Then the prepolymer is reacted with epoxy resin, prepares terminal hydroxy liquid rubber modified epoxy resin by polymers.
The terminal hydroxy liquid rubber modified epoxy resin that the present invention is adopted, terminal hydroxyl polybutadiene liquid rubber is introduced by which
In the cross-linked network of epoxy resin, play toughening effect, due between terminal hydroxy liquid rubber and various modified components with chemistry
Bond is closed, and not only can retain the high-adhesion energy between epoxy resin and metal, and and high flexible with liquid rubber
Property, thus obtained terminal hydroxy liquid rubber modified epoxy resin possesses the unification of pliability and hardness.
Preferably, epoxy resin of the present invention, its structural formula is：
In formula, G is epoxide group, and R is H or alkyl, and n is the integer of 2-4.
Preferably, in modified epoxy of the present invention, doped with additives such as firming agent.
Preferably, WC ceramic particles account for 30-40wt%, further preferred 35wt%.
The wear-resistant coating that the present invention is prepared, which is tightly combined with matrix, and bond strength is more than 800MPa, service life
Extend more than 6-7 times compared to the blade without coating, anti-cavitation ability improves more than 10 times.
The terminal hydroxy liquid rubber modified epoxy resin abrasion-proof corrosion-proof erosion resisting coating of the WC doping that the present invention is prepared, its tool
The advantage of standby ceramic coating, the characteristics of but also with Organic substance good film flexibility, not only anti scuffing, anticorrosive, and pliability is not bad.
Jing is tried out 1 month in waste stream, does not find significantly abrasion and evidence of corrosion.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
Embodiment 1
A kind of turbine blade anticorrosion abrasionproof etching method, which includes：
(1) sandblasting roughening is carried out in blade surface；
(2) it is with acetone and ethanol purge roughening blade surface and dry；
(3) proportioning of 20wt%, terminal hydroxy liquid rubber modified epoxy resin surplus is accounted for according to hard WC ceramic particles, is made
Into slurry mix homogeneously；
(4) by the slurry uniform application in blade surface, it is dried at 90 DEG C, the WC for obtaining cladding in blade surface adulterates
Terminal hydroxy liquid rubber modified epoxy resin abrasion-proof corrosion-proof erosion resisting coating.
Embodiment 2
A kind of turbine blade anticorrosion abrasionproof etching method, which includes：
(1) sandblasting roughening is carried out in blade surface；
(2) it is with acetone and ethanol purge roughening blade surface and dry；
(3) proportioning of 45wt%, terminal hydroxy liquid rubber modified epoxy resin surplus is accounted for according to hard WC ceramic particles, is made
Into slurry mix homogeneously；
(4) by the slurry uniform application in blade surface, it is dried at 130 DEG C, the WC for obtaining cladding in blade surface mixes
Miscellaneous terminal hydroxy liquid rubber modified epoxy resin abrasion-proof corrosion-proof erosion resisting coating.
Embodiment 3
A kind of turbine blade anticorrosion abrasionproof etching method, which includes：
(1) sandblasting roughening is carried out in blade surface；
(2) it is with acetone and ethanol purge roughening blade surface and dry；
(3) proportioning of 35wt%, terminal hydroxy liquid rubber modified epoxy resin surplus is accounted for according to hard WC ceramic particles, is made
Into slurry mix homogeneously；
(4) by the slurry uniform application in blade surface, it is dried at 100 DEG C, the WC for obtaining cladding in blade surface mixes
Miscellaneous terminal hydroxy liquid rubber modified epoxy resin abrasion-proof corrosion-proof erosion resisting coating.
The turbine blade that embodiment 1-3 is prepared, Jing are tried out 1 month in waste stream, do not find significantly mill
Erosion and evidence of corrosion.
Claims (3)
1. a kind of turbine blade anticorrosion abrasionproof etching method, which includes：
(1) sandblasting roughening is carried out in blade surface；
(2) it is with acetone and ethanol purge roughening blade surface and dry；
(3) proportioning of 20-45wt%, terminal hydroxy liquid rubber modified epoxy resin surplus is accounted for according to hard WC ceramic particles, is made
Into slurry mix homogeneously；
(4) by the slurry uniform application in blade surface, it is dried at 90-130 DEG C, the WC for obtaining cladding in blade surface adulterates
Terminal hydroxy liquid rubber modified epoxy resin abrasion-proof corrosion-proof erosion resisting coating；
Described epoxy resin, its structural formula is：
In formula, G is epoxide group, and R is H or alkyl, and n is the integer of 2-4.
2. turbine blade anticorrosion abrasionproof etching method as claimed in claim 1, it is characterised in that described terminal hydroxy liquid
The preparation method of rubber modified epoxy resin is as follows：
First terminal hydroxyl polybutadiene liquid rubber or end hydroxy butadiene/acrylonitrile liquid rubber are reacted with polyisocyanates
Produce polyisocyanates terminated polybutadiene liquid rubber prepolymer or polyisocyanates polybutadiene/acrylonitrile liquid rubber pre-polymerization
Then the prepolymer is reacted with epoxy resin, prepares terminal hydroxy liquid rubber modified epoxy resin by thing.
3. turbine blade anticorrosion abrasionproof etching method as claimed in claim 1 or 2, it is characterised in that WC ceramic particles are accounted for
30-40wt%, further preferred 35wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611011344.8A CN106519903A (en) | 2016-11-17 | 2016-11-17 | Anti-corrosion and anti-abrasion method for organic coating of hydraulic turbine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611011344.8A CN106519903A (en) | 2016-11-17 | 2016-11-17 | Anti-corrosion and anti-abrasion method for organic coating of hydraulic turbine blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106519903A true CN106519903A (en) | 2017-03-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611011344.8A Pending CN106519903A (en) | 2016-11-17 | 2016-11-17 | Anti-corrosion and anti-abrasion method for organic coating of hydraulic turbine blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106519903A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052378A (en) * | 2019-06-06 | 2019-07-26 | 昆明理工大学 | A kind of corrosion-resistant protection reinforcing bar preparation method for building |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089289A (en) * | 1993-01-08 | 1994-07-13 | 宋君亮 | Energy-saving anticorrosive paint |
| CN101643612A (en) * | 2009-07-17 | 2010-02-10 | 华南农业大学 | Waterproof antiseptic wearproof nano paint, preparation method, use method and application thereof |
| CN102251904A (en) * | 2011-06-13 | 2011-11-23 | 鲁毅 | Cavitation-resistant and energy-saving modification method of water turbine |
| CN102504672A (en) * | 2011-10-28 | 2012-06-20 | 西北师范大学 | Epoxy resin-based wear-resistant anticorrosive material |
-
2016
- 2016-11-17 CN CN201611011344.8A patent/CN106519903A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089289A (en) * | 1993-01-08 | 1994-07-13 | 宋君亮 | Energy-saving anticorrosive paint |
| CN101643612A (en) * | 2009-07-17 | 2010-02-10 | 华南农业大学 | Waterproof antiseptic wearproof nano paint, preparation method, use method and application thereof |
| CN102251904A (en) * | 2011-06-13 | 2011-11-23 | 鲁毅 | Cavitation-resistant and energy-saving modification method of water turbine |
| CN102504672A (en) * | 2011-10-28 | 2012-06-20 | 西北师范大学 | Epoxy resin-based wear-resistant anticorrosive material |
Non-Patent Citations (3)
| Title |
|---|
| 李青年: "《薄膜制品设计生产加工新工艺与应用新技术实务全书第一卷》", 30 April 2004, 银生音像出版社 * |
| 段昌国: "《水轮机沙粒磨损》", 30 November 1981, 清华大学出版社 * |
| 胡少坤等: "《端羟基液体丁腈橡胶改性环氧树脂的结构与性能》", 《合成橡胶工业》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052378A (en) * | 2019-06-06 | 2019-07-26 | 昆明理工大学 | A kind of corrosion-resistant protection reinforcing bar preparation method for building |
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Application publication date: 20170322 |